proco[7], ponor[6], porno[6],
poco[6], proc[6], opon[5], pono[5], coro[5], poro[5], ropo[5], noro[4],
pop[5], noc[4], por[4], pro[4], rop[4], ono[3], nor[3], oro[3],
co[3], op[3], po[3], no[2], on[2], or[2], ro[2],
